Daily records
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Built 2026-10-15 (15 October 2026)

Lily Lake Weather Records (USS0010J35S)

Record envelope, standing records and threshold days for Lily Lake (USS0010J35S), Utah, United States, with 47 years of record.

Key Facts for Lily Lake

  • Lily Lake (USS0010J35S) is a weather station in Utah, United States at 40.86 latitude and -110.80 longitude, 2,791 m (9,156 ft) above sea level.
  • The station reports from 1980 to 2026, 47 years of record.
  • 1,464 records set at Lily Lake still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Lily Lake set a daily record precipitation of 40.6 mm (1.6 in) on 29 August 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Utah, United States, 40.86 latitude, -110.80 longitude.
  • Elevation: 2,791 m (9,156 ft).
  • Period of record: 1980 to 2026, 47 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

31 days at or beyond a record
Daily record high and record low at Lily Lake, with 2026 drawn through them The band shows the record high and record low for each calendar day at Lily Lake. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Lily Lake. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Lily Lake, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan17.4 C (63.3 F)-33.3 C (-27.9 F)7.4 C (45.3 F)-23.4 C (-10.1 F)
Feb14.0 C (57.2 F)-29.6 C (-21.3 F)9.4 C (48.9 F)-21.1 C (-6.0 F)
Mar17.7 C (63.9 F)-25.3 C (-13.5 F)17.2 C (63.0 F)-18.4 C (-1.1 F)
Apr19.0 C (66.2 F)-25.0 C (-13.0 F)15.4 C (59.7 F)-16.4 C (2.5 F)
May22.4 C (72.3 F)-19.0 C (-2.2 F)21.4 C (70.5 F)-9.7 C (14.5 F)
Jun27.2 C (81.0 F)-8.7 C (16.3 F)23.5 C (74.3 F)-5.2 C (22.6 F)
Jul28.8 C (83.8 F)-2.4 C (27.7 F)28.8 C (83.8 F)1.9 C (35.4 F)
Aug28.1 C (82.6 F)-3.7 C (25.3 F)27.9 C (82.2 F)3.7 C (38.7 F)
Sep27.2 C (81.0 F)-13.2 C (8.2 F)21.2 C (70.2 F)-1.2 C (29.8 F)
Oct21.3 C (70.3 F)-26.1 C (-15.0 F)20.6 C (69.1 F)0.6 C (33.1 F)
Nov16.3 C (61.3 F)-31.6 C (-24.9 F)n/an/a
Dec14.4 C (57.9 F)-31.7 C (-25.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Lily Lake by the year they were set 1,464 records at Lily Lake still stand. 2008 holds the most, with 96. 02550751002005: 222006: 832007: 772008: 962009: 782010: 802011: 502012: 692013: 612014: 602015: 752016: 662017: 642018: 582019: 502020: 752021: 682022: 662023: 572024: 732025: 802026: 5620052008201120142017202020232026
1,464 records at Lily Lake still stand. 2008 holds the most, with 96.
Standing records at Lily Lake by the year they were set
Year setStanding records
200522
200683
200777
200896
200978
201080
201150
201269
201361
201460
201575
201666
201764
201858
201950
202075
202168
202266
202357
202473
202580
202656

All-Time Record Progression

2 new records
When Lily Lake set new all-time records 2 all-time records were set at Lily Lake between 27 September 2014 and 18 August 2021. Each dot is a new record. Record daily precipitation27 September 2014: Record daily precipitation 40.6 mm (1.6 in)18 August 2021: Record daily precipitation 58.4 mm (2.3 in)20152020
2 all-time records were set at Lily Lake between 27 September 2014 and 18 August 2021. Each dot is a new record.
When Lily Lake set new all-time records
DateKindDetail
2014-09-27Record daily precipitationRecord daily precipitation 40.6 mm (1.6 in)
2021-08-18Record daily precipitationRecord daily precipitation 58.4 mm (2.3 in)

Wettest Day of Each Month

Aug: 58.4 mm (2.3 in)
Record daily precipitation for each month at Lily Lake The wettest day on record for each calendar month at Lily Lake. The most was 58.4 mm (2.3 in) on 18 August 2021. 0204060 Jan: 35.6 mm (1.4 in), 15 January 1995 Jan Feb: 27.9 mm (1.1 in), 8 February 1994 Feb Mar: 30.5 mm (1.2 in), 8 March 1986 Mar Apr: 27.9 mm (1.1 in), 11 April 1983 Apr May: 35.6 mm (1.4 in), 10 May 2005 May Jun: 35.6 mm (1.4 in), 21 June 1982 Jun Jul: 40.6 mm (1.6 in), 15 July 2017 Jul Aug: 58.4 mm (2.3 in), 18 August 2021 Aug Sep: 40.6 mm (1.6 in), 27 September 2014 Sep Oct: 35.6 mm (1.4 in), 23 October 1991 Oct Nov: 38.1 mm (1.5 in), 25 November 1983 Nov Dec: 30.5 mm (1.2 in), 13 December 2009 Dec
The wettest day on record for each calendar month at Lily Lake. The most was 58.4 mm (2.3 in) on 18 August 2021.
Record daily precipitation for each month at Lily Lake
MonthRecord daily precipitation (mm)Date
Jan35.6 mm (1.4 in)15 January 1995
Feb27.9 mm (1.1 in)8 February 1994
Mar30.5 mm (1.2 in)8 March 1986
Apr27.9 mm (1.1 in)11 April 1983
May35.6 mm (1.4 in)10 May 2005
Jun35.6 mm (1.4 in)21 June 1982
Jul40.6 mm (1.6 in)15 July 2017
Aug58.4 mm (2.3 in)18 August 2021
Sep40.6 mm (1.6 in)27 September 2014
Oct35.6 mm (1.4 in)23 October 1991
Nov38.1 mm (1.5 in)25 November 1983
Dec30.5 mm (1.2 in)13 December 2009

Period of Record Coverage

2005 to 2026
Days with data per year at Lily Lake 22 years of record at Lily Lake, 2005 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2005, 2026. 2005: 147 of 365 days2006: 362 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 364 of 365 days2020: 363 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 360 of 365 days2026: 271 of 365 days20052010201520202025
22 years of record at Lily Lake, 2005 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2005, 2026.
Days with data per year at Lily Lake
YearDays with dataShare of yearComplete
200514740%No
200636299%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019364100%Yes
202036399%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
202536099%Yes
202627174%No

Latest Records

20
Latest records at Lily Lake
DateStationRecordValueBeat old record byOld record stoodSignificance
29 August 2026Lily Lake, USdaily rain (Provisional)40.6 mm (1.6 in)33.0 mm (1.3 in)23 years50 of 100 (Notable)
21 July 2026Lily Lake, USdaily rain25.4 mm (1.0 in)2.5 mm (0.10 in)13 years12 of 100 (Routine)
17 May 2026Lily Lake, USdaily rain15.2 mm (0.6 in)2.5 mm (0.10 in)44 years20 of 100 (Routine)
6 March 2026Lily Lake, USdaily rain (Tie)7.6 mm (0.30 in)tie37 years3 of 100 (Routine)
3 March 2026Lily Lake, USdaily rain (Tie)12.7 mm (0.5 in)tie44 years4 of 100 (Routine)
17 February 2026Lily Lake, USdaily rain20.3 mm (0.8 in)2.5 mm (0.10 in)40 years20 of 100 (Routine)
27 December 2025Lily Lake, USdaily rain15.2 mm (0.6 in)5.0 mm (0.20 in)28 years20 of 100 (Routine)
16 October 2025Lily Lake, USdaily rain22.9 mm (0.9 in)7.7 mm (0.30 in)44 years20 of 100 (Routine)
5 February 2025Lily Lake, USdaily rain (Tie)7.6 mm (0.30 in)tie6 years1 of 100 (Routine)
29 October 2024Lily Lake, USdaily rain25.4 mm (1.0 in)17.8 mm (0.7 in)43 years46 of 100 (Notable)
17 October 2024Lily Lake, USdaily rain (Tie)20.3 mm (0.8 in)tie40 years4 of 100 (Routine)
17 August 2024Lily Lake, USdaily rain15.2 mm (0.6 in)5.0 mm (0.20 in)34 years20 of 100 (Routine)
13 August 2024Lily Lake, USdaily rain20.3 mm (0.8 in)2.5 mm (0.10 in)41 years20 of 100 (Routine)
12 August 2024Lily Lake, USdaily rain12.7 mm (0.5 in)2.5 mm (0.10 in)43 years20 of 100 (Routine)
7 May 2024Lily Lake, USdaily rain (Tie)17.8 mm (0.7 in)tie38 years3 of 100 (Routine)
2 February 2024Lily Lake, USdaily rain (Tie)15.2 mm (0.6 in)tie26 years3 of 100 (Routine)
14 January 2024Lily Lake, USdaily rain (Tie)10.2 mm (0.4 in)tie33 years3 of 100 (Routine)
12 January 2024Lily Lake, USdaily rain12.7 mm (0.5 in)5.1 mm (0.20 in)26 years20 of 100 (Routine)
7 December 2023Lily Lake, USdaily rain (Tie)10.2 mm (0.4 in)tie36 years3 of 100 (Routine)
16 November 2023Lily Lake, USdaily rain (Tie)15.2 mm (0.6 in)tie9 years1 of 100 (Routine)

Climate Trend

20 complete years, 2006 to 2025
Annual mean temperature at Lily Lake as warming stripes, 2006 to 2025 One stripe for each of 20 complete years at Lily Lake, 2006 to 2025. Blue stripes are years cooler than the station's own mean of 2.3 C (36.1 F); red stripes are warmer. The coolest year was 2008, at 0.4 C (32.6 F), and the warmest was 2025, at 3.8 C (38.8 F). The strongest colour marks a difference of 2.0 C (3.6 F). 2006: 1.2 C, -1.1 C from the station mean2007: 2.1 C, -0.2 C from the station mean2008: 0.4 C, -1.9 C from the station mean2009: 0.9 C, -1.4 C from the station mean2010: 1.2 C, -1.1 C from the station mean2011: 0.9 C, -1.4 C from the station mean2012: 2.8 C, +0.5 C from the station mean2013: 1.5 C, -0.8 C from the station mean2014: 2.4 C, +0.1 C from the station mean2015: 3.2 C, +1.0 C from the station mean2016: 3.2 C, +0.9 C from the station mean2017: 3.1 C, +0.9 C from the station mean2018: 2.9 C, +0.6 C from the station mean2019: 1.9 C, -0.4 C from the station mean2020: 2.9 C, +0.6 C from the station mean2021: 3.2 C, +1.0 C from the station mean2022: 2.3 C, +0.1 C from the station mean2023: 2.3 C, +0.1 C from the station mean2024: 3.3 C, +1.0 C from the station mean2025: 3.8 C, +1.5 C from the station mean2006200820102012201420162018202020222024
One stripe for each of 20 complete years at Lily Lake, 2006 to 2025. Blue stripes are years cooler than the station's own mean of 2.3 C (36.1 F); red stripes are warmer. The coolest year was 2008, at 0.4 C (32.6 F), and the warmest was 2025, at 3.8 C (38.8 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Lily Lake as warming stripes, 2006 to 2025
YearAnnual mean temperatureDifference from the station mean
20061.2 C-1.05 C
20072.1 C-0.15 C
20080.4 C-1.91 C
20090.9 C-1.39 C
20101.2 C-1.11 C
20110.9 C-1.38 C
20122.8 C+0.55 C
20131.5 C-0.76 C
20142.4 C+0.13 C
20153.2 C+0.96 C
20163.2 C+0.91 C
20173.1 C+0.86 C
20182.9 C+0.58 C
20191.9 C-0.38 C
20202.9 C+0.62 C
20213.2 C+0.97 C
20222.3 C+0.06 C
20232.3 C+0.07 C
20243.3 C+0.98 C
20253.8 C+1.53 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1980 to 2026
Yearly extremes at Lily Lake: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)28.8 C (83.8 F)202627.0 C (80.5 F)22
Coldest night (TNn)-33.3 C (-27.9 F)2007-27.7 C (-18.0 F)22
Wettest day (Rx1day)58.4 mm (2.3 in)202127.9 mm (1.1 in)47
Wettest five days (Rx5day)99.1 mm (3.9 in)202155.9 mm (2.2 in)47
Longest dry spell (CDD)44 days202524 days47

Hottest day (TXx)

Hottest day (TXx) at Lily Lake by year The hottest day of the year at Lily Lake, 1980 to 2026. The record is 28.8 C (83.8 F) in 2026, marked on the chart; the median year is 27.0 C (80.5 F). 2426283019801990200020102020Record: 28.8 C (83.8 F) in 2026
The hottest day of the year at Lily Lake, 1980 to 2026. The record is 28.8 C (83.8 F) in 2026, marked on the chart; the median year is 27.0 C (80.5 F).
Hottest day (TXx) at Lily Lake by year
YearHottest day (TXx)
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
200524.2 C (75.6 F)
200628.0 C (82.4 F)
200726.9 C (80.4 F)
200826.2 C (79.2 F)
200926.6 C (79.9 F)
201026.5 C (79.7 F)
201125.3 C (77.5 F)
201226.0 C (78.8 F)
201327.2 C (81.0 F)
201427.1 C (80.8 F)
201526.1 C (79.0 F)
201626.4 C (79.5 F)
201726.1 C (79.0 F)
201827.2 C (81.0 F)
201925.6 C (78.1 F)
202027.7 C (81.9 F)
202127.0 C (80.6 F)
202227.6 C (81.7 F)
202327.4 C (81.3 F)
202427.5 C (81.5 F)
202528.1 C (82.6 F)
202628.8 C (83.8 F)

Coldest night (TNn)

Coldest night (TNn) at Lily Lake by year The coldest night of the year at Lily Lake, 1980 to 2026. The record is -33.3 C (-27.9 F) in 2007, marked on the chart; the median year is -27.7 C (-18.0 F). -35-30-25-2019801990200020102020Record: -33.3 C (-27.9 F) in 2007
The coldest night of the year at Lily Lake, 1980 to 2026. The record is -33.3 C (-27.9 F) in 2007, marked on the chart; the median year is -27.7 C (-18.0 F).
Coldest night (TNn) at Lily Lake by year
YearColdest night (TNn)
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005-28.5 C (-19.3 F)
2006-29.9 C (-21.8 F)
2007-33.3 C (-27.9 F)
2008-28.2 C (-18.8 F)
2009-32.9 C (-27.2 F)
2010-31.7 C (-25.1 F)
2011-30.9 C (-23.6 F)
2012-27.9 C (-18.2 F)
2013-31.9 C (-25.4 F)
2014-27.0 C (-16.6 F)
2015-26.0 C (-14.8 F)
2016-28.2 C (-18.8 F)
2017-27.4 C (-17.3 F)
2018-27.5 C (-17.5 F)
2019-26.8 C (-16.2 F)
2020-25.7 C (-14.3 F)
2021-24.3 C (-11.7 F)
2022-25.7 C (-14.3 F)
2023-27.6 C (-17.7 F)
2024-22.6 C (-8.7 F)
2025-30.2 C (-22.4 F)
2026-23.4 C (-10.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Lily Lake by year The wettest day of the year at Lily Lake, 1980 to 2026. The record is 58.4 mm (2.3 in) in 2021, marked on the chart; the median year is 27.9 mm (1.1 in). 020406019801990200020102020Record: 58.4 mm (2.3 in) in 2021
The wettest day of the year at Lily Lake, 1980 to 2026. The record is 58.4 mm (2.3 in) in 2021, marked on the chart; the median year is 27.9 mm (1.1 in).
Wettest day (Rx1day) at Lily Lake by year
YearWettest day (Rx1day)
198022.9 mm (0.9 in)
198127.9 mm (1.1 in)
198238.1 mm (1.5 in)
198338.1 mm (1.5 in)
198422.9 mm (0.9 in)
198533.0 mm (1.3 in)
198630.5 mm (1.2 in)
198722.9 mm (0.9 in)
198825.4 mm (1.0 in)
198927.9 mm (1.1 in)
199025.4 mm (1.0 in)
199135.6 mm (1.4 in)
199222.9 mm (0.9 in)
199325.4 mm (1.0 in)
199427.9 mm (1.1 in)
199538.1 mm (1.5 in)
199627.9 mm (1.1 in)
199730.5 mm (1.2 in)
199835.6 mm (1.4 in)
199922.9 mm (0.9 in)
200027.9 mm (1.1 in)
200120.3 mm (0.8 in)
200222.9 mm (0.9 in)
200322.9 mm (0.9 in)
200427.9 mm (1.1 in)
200535.6 mm (1.4 in)
200627.9 mm (1.1 in)
200735.6 mm (1.4 in)
200822.9 mm (0.9 in)
200930.5 mm (1.2 in)
201027.9 mm (1.1 in)
201122.9 mm (0.9 in)
201235.6 mm (1.4 in)
201322.9 mm (0.9 in)
201440.6 mm (1.6 in)
201515.2 mm (0.6 in)
201633.0 mm (1.3 in)
201740.6 mm (1.6 in)
201825.4 mm (1.0 in)
201927.9 mm (1.1 in)
202030.5 mm (1.2 in)
202158.4 mm (2.3 in)
202227.9 mm (1.1 in)
202317.8 mm (0.7 in)
202425.4 mm (1.0 in)
202522.9 mm (0.9 in)
202640.6 mm (1.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Lily Lake by year The wettest five days of the year at Lily Lake, 1980 to 2026. The record is 99.1 mm (3.9 in) in 2021, marked on the chart; the median year is 55.9 mm (2.2 in). 2040608010019801990200020102020Record: 99.1 mm (3.9 in) in 2021
The wettest five days of the year at Lily Lake, 1980 to 2026. The record is 99.1 mm (3.9 in) in 2021, marked on the chart; the median year is 55.9 mm (2.2 in).
Wettest five days (Rx5day) at Lily Lake by year
YearWettest five days (Rx5day)
198043.2 mm (1.7 in)
198176.2 mm (3.0 in)
198283.8 mm (3.3 in)
198353.3 mm (2.1 in)
198455.9 mm (2.2 in)
198573.7 mm (2.9 in)
198683.9 mm (3.3 in)
198758.5 mm (2.3 in)
198855.9 mm (2.2 in)
198945.7 mm (1.8 in)
199040.6 mm (1.6 in)
199171.1 mm (2.8 in)
199263.5 mm (2.5 in)
199376.2 mm (3.0 in)
199463.5 mm (2.5 in)
199568.6 mm (2.7 in)
199653.2 mm (2.1 in)
199748.3 mm (1.9 in)
199888.9 mm (3.5 in)
199950.8 mm (2.0 in)
200043.1 mm (1.7 in)
200153.4 mm (2.1 in)
200248.3 mm (1.9 in)
200366.1 mm (2.6 in)
200471.1 mm (2.8 in)
200560.9 mm (2.4 in)
200643.1 mm (1.7 in)
200773.7 mm (2.9 in)
200843.2 mm (1.7 in)
200950.7 mm (2.0 in)
201078.7 mm (3.1 in)
201155.9 mm (2.2 in)
201245.8 mm (1.8 in)
201355.8 mm (2.2 in)
201471.1 mm (2.8 in)
201538.2 mm (1.5 in)
201676.1 mm (3.0 in)
201768.4 mm (2.7 in)
201840.6 mm (1.6 in)
201953.3 mm (2.1 in)
202053.4 mm (2.1 in)
202199.1 mm (3.9 in)
202240.6 mm (1.6 in)
202335.6 mm (1.4 in)
202445.7 mm (1.8 in)
202538.0 mm (1.5 in)
202660.8 mm (2.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Lily Lake by year The longest dry spell of the year at Lily Lake, 1980 to 2026. The record is 44 days in 2025, marked on the chart; the median year is 24 days. 102030405019801990200020102020Record: 44 days in 2025
The longest dry spell of the year at Lily Lake, 1980 to 2026. The record is 44 days in 2025, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Lily Lake by year
YearLongest dry spell (CDD)
198012 days
198124 days
198233 days
198316 days
198413 days
198521 days
198628 days
198725 days
198834 days
198918 days
199016 days
199124 days
199225 days
199317 days
199424 days
199521 days
199626 days
199725 days
199819 days
199923 days
200028 days
200123 days
200229 days
200328 days
200419 days
200515 days
200613 days
200716 days
200838 days
200921 days
201017 days
201115 days
201238 days
201336 days
201416 days
201519 days
201637 days
201731 days
201824 days
201922 days
202039 days
202131 days
202222 days
202314 days
202436 days
202544 days
202628 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

20 years with a frost

Across 20 years with a frost, the median last spring frost at Lily Lake falls on 18 June and the median first autumn frost on 5 September, which leaves a median of 77 days between them.

Frost dates and growing season at Lily Lake
MeasureMedian, all yearsEarliest periodRecent period (2006 to 2025)Recent against earliestFitted trend
Last spring frost18 Junen/a18 Junen/an/a
First autumn frost5 Septembern/a5 Septembern/an/a
Growing days77 daysn/a77 daysn/an/a

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

45 years, 1981 to 2025

A day with at least 27.7 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 53.1 mm (2.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Lily Lake: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years27.7 mm (1.1 in)
5 years34.2 mm (1.3 in)
10 years38.6 mm (1.5 in)
25 years44.3 mm (1.7 in)
50 years48.7 mm (1.9 in)Longer than the 45 years of record
100 years53.1 mm (2.1 in)Longer than the 45 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 45 years of values from 1981 to 2025.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 58.4 mm (2.3 in) in 2021; 40.6 mm (1.6 in) in 2014; 40.6 mm (1.6 in) in 2017.

Download the Data

  • Data for Lily Lake standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Lily Lake threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-13).